Integration of Part Selection, Machine Loading and Machining Optimisation Decisions for Balanced Workload in Flexible Manufacturing System
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Date
2011
Authors
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Journal ISSN
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Publisher
International Journal of Industrial Engineering Computations
Abstract
This paper demonstrates the importance of incorporating and solving the machining
optimisation problem jointly with part selection and machine loading problems in order to
avoid unbalanced workload in the FMS. Unbalanced workload renders to ineffective FMS such
that some machines on the manufacturing shop floor become more occupied than others. Since
CNC machine tools employed in the FMS are rather expensive, it is mostly important to
balance the workload so that all machines can be effectively utilised. Therefore, in this study,
two mathematical models are presented and solved in efforts to balance the workload and
improve the performance of the FMS. A two-stage sequential approach is adopted whereby the
first stage deals with the maximum throughput objective while the second stage deals with the
minimum production cost objective. The results show that when part selection, machine loading
and machining optimisation problems are jointly solved, more practical decisions can be made
and a wide range of balanced workload in the FMS can be realised with minimum production
cost objective. The results also show that the available machine time and tooling budget have
enormous effects on throughput and production cost.
Description
Keywords
Part selection, Machine loading, Machining optimisation, Flexible manufacturing systems
Citation
Mgwatu, M., 2011. Integration of part selection, machine loading and machining optimisation decisions for balanced workload in flexible manufacturing system. International Journal of Industrial Engineering Computations, 2(4), pp.913-930.